1913] The North American Species of Tipula. 483 



164. Abdomen with distinct, reddish brown dorsal stripe, lateral margins of 



segments not paler. Mesonotum with three gray vittae, median 

 indistinct. Hypopygium small, ninth tergite with a broad lobe on each 

 side of the posterior margin; ninth sternite with deep narrow incision, 

 with two pairs of broad appendages. Length 13-15 mm. . . rostellata Doane 

 Abdomen not striped, lateral margin of segments gray. Head and meso- 

 notum velvety black, latter with four rather indistinct grayish lines. 

 Hypopygium small but rather long, ninth tergite deeply incised; ninth 

 sternite with very deep, broad incision. Wings with grayish tinge 

 stigma brown, veins brown, except at base of discal and second sub- 

 marginal cell where they are white. Length 11-15 mm., .cervicula Doane 



165. Wings of the male normally developed 166' 



Wings of both sexes* reduced in size or rudimentary 167 



166. Wings of female about one half the size of those of the male. Brownish- 



yellow; basal three joints of antennas yellow, remainder dark brown; 

 mesonotum vittate; abdomen with three darker stripes; eighth sternite 

 somewhat crescent shaped, lateral margin with subtriangular append- 

 ages; posterior margin of ninth tergite somewhat crescent shaped; 

 ninth sternite almost divided by a deep narrow, U-shaped incision; 

 pleural plates present. Wings hyaline with smoky tinge; a whitish, 

 ante-stigmal spot extends into the base of the fourth posterior cell; a 

 whitish spot beyond the stigma. Length 16-20 mm.; of wings, male 



18 mm., female 10 mm Williamsi Doane 



Wings of female much more reduced simplex] Doane 



167. Wings greatly reduced in size but retaining the wing-form; 4-9 mm. long . . 168 



Wings reduced to mere irregular shaped pads, less than one half the 

 length of the halters : 169 



168. Brownish yellow, thorax light yellow, stripes yellow (often indistinct). 



Antenna brown, basal joints yellow; abdomen with dorsal, lateral and 

 ventral stripes; eighth sternite with broad, shallow median incision, 

 lateral margin with broad subtriangular plates; ninth tergite with 

 broad, circular incision with two short, median triangular processes. 

 Wings distorted, variable in size, veins crowded. Length, male, 



15 mm. ; wing 5-9 mm. ; female, 22 mm. ; wing 5-6 mm vestigipennis Doane 



Cinereous, thorax cinereous with four rather broad, brown stripes. 

 Antennae brown, basal joints yellow; abdomen with dorsal and lateral 

 stripes. Wings much reduced in size (9 ), but little longer than the 

 halters. Length 26 mm. ( 9 ); wings 4 mm sylvestra Doane 



169. Brown; antennae wholly brown; thorax with median darker stripe; 



halters rather long and slender; abdomen with broad dorsal stripe; 

 hypopygium rather small, ninth tergite with median groove and with 

 deep, broad U-shaped incision containing two short sharp processes; 

 ninth sternite almost completely divided by a narrow deep, V-shaped 

 incision. Length 4-6 mm quaylii Doane 



APPENDIX. 



The following two species were not included in the synopsis: 



T. pratorum Kirby. 



Head and thorax slate colored, the latter with four brown stripes; antennae 

 fuscous, scape yellow. Abdomen yellow, with a fuscous dorsal stripe; hypopy- 

 gium black. Wings subfuscous, clouded with white in the male, one or two fuscous 

 spots near the anterior margin, stigma black, 24mm. 



Wings of female not clouded with white. 

 T. simulata Walk 9 • 



Fuscous, palpi and antennae black, the latter about one-half the length of the 

 thorax, fuscous, scape tawny, stripes indistinct. Abdomen dull testaceous with 

 fuscous stripe. Wings hyaline with several brown spots, which are darkest along 

 the costa. 20mm. 



*Male of sylvestra not known. 

 fSee under 37. 



